ML20155C478

Forwards RAI Re Resoultion to GL 96-06 Issues at Plant,Unit 1.Response Requested by 981130

ML20155C478
Person / Time
Site:	Pilgrim
Issue date:	10/29/1998
From:	Wang A NRC (Affiliation Not Assigned)
To:	Olivier L BOSTON EDISON CO.
References
GL-96-06, GL-96-6, TAC-M96851, NUDOCS 9811020248
Download: ML20155C478 (3)

Text

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-- October 29, 1998 Mr. Leon J. Olivier Vice President - Nuclear / Station Director Boston Edison Company Pilgrim Nuclear Power Station RFD #1 Rocky Hill Road Plymouth, MA 02360

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR RESOLUTION OF GENF. llc LETTER (GL) 96-06 ISSUES AT PILGRIM NUCLEAR POWER STATION, UNIT 1 (TAC NO. M96851)

Dear Mr. Olivier:

In response to GL 96-06, Boston Edison Company provided its assessment of the waterhammmer and two phase flow issues for the Pilgrim Nuclear Power Station in a letter dated January 28,1997. The Nuclear Regulatory Commission (NRC) has reviewed the response and determined that additional information is needed to complete the review. Enclosed is the staffs Request for Additional Information. We request that you respond by November 30,1998. This response date has been discussed with and agreed upon by Peter Khaler of your staff.

Questions regarding this request should be sent to my attention at the above address; or, you can contact me at (301) 415-1445.

Sincerely, Original signed by Alan B. Wang, Project Manager Project Directorate 1-3 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket No. 50-293

Enclosure:

Request for Additional Information cc w/ encl: See next page DISTRIBUTION-N T. Clark J. Zwolinski ACRS f PUBLIC A. Wang C. Cowgill, RI J.Tatum PDI3 R/F OGC J. Fair )f

'Oh DOCUMENT NAME: G:\ PILGRIM \M96851.RAI To receive s copy of this document, Indicate in the box: "C" = Copy without attachment / enclosure "E" = Copy with attachment / enclosure "N" = No copy CFFICE- J: POI 3 _, p n lE PM:P01 3_ _ l (A)StP01 3 f lo l l NAME TLClark' ) 6 V AWeng WW C/hes .

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Mr. LEn J. Olivtr

' Boston Edison Comp:ny Pilgrim Nucl:ar Power Station 2 cc:

Mr. Ron Ledgett Mr. Jack Alexander Executive Vice President Manager, Reg. Relations and Quality 800 Boyleston Street Assurance Boston, MA 02199 . Pilgrim Nuclear Power Station RFD #1 Rocky Hill Road Resident inspector Plymouth, MA 02360 U. S. Nuclear Regulatory Commission Pilgrim Nuclear Power Station Mr. David F. Tarantino Post Office Box 867 Nuclear Information Manager Plymouth, MA 02360 Pilgrim Nuclear Power Station RFD #1, Rocky Hill Road Chairman, Board of Selectmen Plymouth, MA 02360 11 Uncoln Street Plymouth, MA 02360 Ms. Kathleen M. O'Toole Secretary of Public Safety Chairman, Duxbury Board of Selectmen Exe:.utive Office of Public Safety Town Hall One Ashburton Place 878 Tremont Street Boston, MA 02108 Duxbury, MA 02332 Mr. Peter LaPorte, Director Grfice of the Commissioner Attn: James Muckerheide Massacht'setts Department of Massachusetts Emergency Management Environmental Protection Agency One Winter Street 400 Worcester Road Boston, MA 02108 P.O. Box 1496 Framingham, MA 01701-0317 j Office of the Attomey General j

One Ashburton Place Chairman, Citizens Urging ,

20th Floor Responsible Energy Boston, MA 02108 P.O. Box 2621 Duxbury, MA 02331 l Mr. Robert M. Hallisey, Director Radiation Cuntrol Program Cit lzens at Risk Massachusetts Department of P.O. Box 3803 Public Health Plymouth, MA 02361 305 South Street l

Boston, MA 02130 W.S. Stowe, Esquire Boston Edison Company Regional Administrator, Region i 800 Soyleston St.,36th Floor U. S. Nuclear Regulatory Commission Boston, MA 02199 475 Allendale Road King of Prussia, PA 19406 Chairman Nuclear Matters Committee Ms. Jane Fleming Town Hall 8 Oceanwood Drive 11 Uncoln Street Duxbury, MA 0233 Plymouth, MA 02360 Mr. James Keyes Mr. William D. Meinert Acting Licensing Division Manager Nuclear Engineer Boston Edison Company Massachusetts Municipal Wholesale 600 Rocky Hill Road Electric Company Plymouth, MA 02360-5599 P.O. Box 426 Ludlow, MA 01056-0426

N.

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I REQUEST FOR ADDITIONAL INFORMATION (RAli PILGRIM NUCLEAR POWER STATION. UNIT 1 1

Generic Letter (GL) 96-06, " Assurance of Equipment Operability and Containment Integrity During Design Basis Accident Conditions." dated September 30,1996, included a request I for licensees to evaluate cooling water syslams that serve containment air coolers to assure that they are not vulnerable to waterhammer and two-phase flow conditions. Bos;on Edison Company (the licensee) identified six pipe lines that are subject to the effects of thermally-induced pressurization. The following questions are related to the issue of thermally-induced pressurization of piping runs penetrating the containment.

1. Has the relief valve for the two reactor building closed cooling water lines been added to the IST program?

2. Have pressure relief devices been added to the two sump pump discharge lines?

3. Have the valves inside containment on the core spray sample lines been opened?

4. For the residual heat removal (RHR) shutdown cooling line please provide the following:

a) Provide the applicable design criteria for the piping and valves including the required load combinations, b) Provide a drawing of the piping run between the isolation valves including the lengths and thicknesses of the piping segments and the type and thickness of the insulation, c) Provide the maximum-calculated temperature and pressure for the pipe run. Describe in detail, the method used to calculate these pressure and temperature values. This should include a discussion of the heat transfer model used in the analysis and the basis for the heat transfer coefficients used in the analyses.

Enclosure l

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